Urbonavičienė, G., L. Gargasas, R. Aržanauskienė, Z. Bertašienė, M. Tamošiūnaitė, and I. Blužaitė. 2006. “Usefulness of Signal-Averaged ECG, Short-Term Heart Rate Variability, QT Interval and T Loop Criteria in Predicting 2 Years Lethal Outcome After Myocardial Infarction”. Elektronika Ir Elektrotechnika 70 (6):29-32. https://eejournal.ktu.lt/index.php/elt/article/view/10689.